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777dan777 [17]
4 years ago
12

The combustion of ethanol, C2H5OH(l), in oxygen to form carbon dioxide gas and water vapor is shown by which balanced chemical e

quation?
A) C2H5OH(l) + O2(g) → CO2(g) + H2O(g)
B) C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g)
C) 2CO2(g) + 3O2(g) → C2H5OH(l) + 3H2O(g)
D) 2CO2(g) + 3H2O(g) → C2H5OH(l) + 3O2(g)
Chemistry
2 answers:
Vitek1552 [10]4 years ago
4 0

Answer:

B

Explanation:

The last 2 answers can immediately be cancelled out as they're not combustion of ethanol, combustion in this context is not a reversable reaction so cannot be referenced in this way.

The answer is determined to be B just by simply counting the numbers of each of the elements on the reactants (left) side and the products (right) side and ensuring they're the same

In A on the reactants side there is 2C 6H 3O and on the products side there is 1C 3O and 2H its not equal so it is not correct

In B on the reactants side there is 2C 6H 7O and on the products side there is 2C 6H 7O its equal so this answer is correct

Alika [10]4 years ago
4 0

Answer:

BBBBBBBB!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Explanation:

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According to the following reaction, how many grams of carbon tetrachloride will be formed upon the complete reaction of 27.7 gr
Black_prince [1.1K]

Answer: 15.0 g of CCl_4 will be formed upon the complete reaction of 27.7 grams of chlorine gas with excess carbon disulfide

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} Cl_2=\frac{27.7g}{71g/mol}=0.390moles

The balanced chemical reaction is:

CS_2(g)+4Cl_2(g)\rightarrow CCl_4(l)+2SCl_2(s)

Cl_2 is the limiting reagent as it limits the formation of product and CS_2 is the excess reagent.

According to stoichiometry :

4 moles of Cl_2 give=  1 mole of CCl_4

Thus 0.390 moles of  will give = \frac{1}{4}\times 0.390=0.0975moles of CCl_4

Mass of CCl_4=moles\times {\text {Molar mass}}=0.0975\times 154=15.0g

Thus 15.0 g of CCl_4 will be formed upon the complete reaction of 27.7 grams of chlorine gas with excess carbon disulfide

7 0
3 years ago
How is atomic number different from mass number?
Nimfa-mama [501]
Hello Gary My Man!

Well, as you can clearly see 

<span>The atomic number of an element is basically the number of protons it has. So yes, for every element this is different. Now, the mass number of an element as known, is the number of protons+the number of neutrons.  So theoretically as we can see, this number should be a whole number, but since there are different isotopes (atoms of the same element with different numbers of neutrons) of each element, most periodic tables take account of that, so they often include decimals as seen. 

So in Short, ALL</span> the atoms of a particular element have the SAME EXACT atomic number<span> (</span>number<span> of protons of course). The </span>atoms of different elements have very different numbers of protons. And of course, the MASS number of an atom is the TOTAL number as known, of protons and of course, the neutrons it contains in it.

I Hope my answer has come to your Help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead! :)

(Ps. Mark As Brainliest IF Helped!)

-TheOneAboveAll :D


7 0
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hat is the best way to compare a concentrated solution to a dilute solution, given the same volume of solution?
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Using the molarity of the solution

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